Registration Dossier
Registration Dossier
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EC number: 236-715-1 | CAS number: 13466-20-1
Endpoint summary
Administrative data
Description of key information
Additional information
Based on the available data the potential for bioaccumulation of barium bis(dihydrogen orthophosphate) is assumed to be low.
Barium bis(dihydrogen orthophosphate) dissociates to barium ion and phosphate (PO43-) species in sewerage systems, sewage treatment plants and in the environment.
The phosphate anion (PO43-) is ubiquitous in ecosystems and biologically essential for many organisms. The essential elements are actively regulated in organisms and a general. Bioaccumulation in organisms and food chains is not relevant.
Generally, metals like barium do not biomagnify unless they are present in organic form or have the potential to be in an organic form. Particularly in the aquatic environment barium will be mainly present in insoluble, inorganic form like barium sulphate or barium carbonate. Together with the potential of barium to adsorb to soil and suspended matter a relatively low bioavailability can be assumed.
A low bioconcentration factor was determined in a study that investigated trace elements in bluegill tissue and in river water (Nakamoto and Hassler, 1992). Fish were collected from Merced River and the Salt Slough (Merced County, California, USA). The barium concentrations in fish tissue (carcass and gonad) and river water were analysed. The highest BCF of 74.4 for barium was determined in the carcass of male bluegills. Based on the available BCF a low bioaccumulation potential of barium is assumed.
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